CN107689216A - It is a kind of to improve system and method visual under end product sunlight - Google Patents
It is a kind of to improve system and method visual under end product sunlight Download PDFInfo
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- CN107689216A CN107689216A CN201710851726.XA CN201710851726A CN107689216A CN 107689216 A CN107689216 A CN 107689216A CN 201710851726 A CN201710851726 A CN 201710851726A CN 107689216 A CN107689216 A CN 107689216A
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- lcd display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention proposes system and method visual under a kind of improvement end product sunlight, including：Main frame, ambient light sensor, backlight drive circuit, LCD display, wherein, LCD display is built-in with backlight LED, and ambient light sensor sends the ambient light intensity AL values of the surrounding enviroment of acquisition terminal product to main frame；Ambient light intensity AL value of the host analysis from environmental sensor, judges whether the AL values are more than predetermined threshold value, if it is judges end product local environment for outdoor strong light environment, then forces to send the first pwm signal to backlight drive circuit；The output end of backlight drive circuit is connected with the input of LCD display, for exporting the first LED current to LCD display under the driving of the first pwm signal；LCD display enters high-high brightness pattern or high brightness pattern.Present invention increase sunlight sub-screen is visual, avoids not seeing Chu's screen display content under the outdoor strong light as caused by neglecting user.
Description
Technical field
It is visual under more particularly to a kind of improvement end product sunlight the present invention relates to mobile communication terminal technical field
System and method.
Background technology
With the fast development of intelligent mobile terminal equipment, this kind equipment more and more uses under circumstances, its
In just include sun-drenched open air.User is in this kind of environment in use, big city finds that screen display content is not easy to see
Clear, color is thin out, more some equipment, once user forgets to be arranged to high-high brightness or auto brightness, display content is complete
Complete not see Chu, serious influence user operates, and function is lost, and Consumer's Experience is excessively poor.
Solves this problem, existing main method is to reduce screen reflection rate and increase screen intensity, reduces reflectivity
Need to carry out multicoating, cost is high and poor reliability, screen construction and material limitation can not be widely implemented, the side of current main-stream
Method is all to increase screen intensity to be lifted, and is realized using more LED lamps, but this method can bring the increasing of equipment power dissipation
Add, have considerable influence to equipment endurance.Meanwhile indoors or compared with dark situation, if being not provided with auto brightness or manually
Brightness is adjusted, excessively bright equipment can cause visual fatigue and power wastage.
Current end product, the workflow of auto brightness are：Optical sensor monitoring of environmental light, AL values are passed into master
Machine, main frame are received after information according to Software for Design, send corresponding to pwm signal to LED driver, LED driver be converted to not
Same current value, LED luminosity under the driving of different current values is different, and LCD shows different brightness.
LED power consumptions are substantially linear with dutycycle, such as the electric current consumed during 50% dutycycle, only about 100% account for
The half of empty ratio.Present large-sized LCD, LED power consumptions probably account for more than the 80% of LCD overall powers, so LED power consumption meetings
LCD overall powers are significantly affected, and LCD power consumptions account for more than the 30% of equipment overall power, so reducing LED power consumptions to complete machine
Endurance plays an important role.
With reference to figure 2, for the auto brightness control method commonly used in current equipment, the environmental light intensity that equipment monitors light sensation
Angle value, different duty is corresponded to, then correspond to equipment difference brightness, the action can be realized by auto brightness function, also may be used
To be manually adjusted by user.
But the drawbacks of this design, is, if user's carelessness or maloperation, brightness set it is relatively low in the state of, at family
Content can not be almost seen outside, in addition, even if being provided with high-high brightness, because daylight disturbs, display effect is also poor.
The content of the invention
The purpose of the present invention is intended at least solve one of described technological deficiency.
Therefore, it is an object of the invention to propose system and method visual under a kind of improvement end product sunlight.
To achieve these goals, the embodiment of one aspect of the present invention provides visual under a kind of improvement end product sunlight
System, including：Main frame, ambient light sensor, backlight drive circuit, LCD display, wherein, the LCD display is built-in with
Backlight LED,
The output end of the ambient light sensor is connected with the input of the main frame, for by the week of acquisition terminal product
The ambient light intensity AL values of surrounding environment are sent to the main frame；
The output end of the main frame is connected with the backlight drive circuit, for analyzing the ring from the environmental sensor
Border luminous intensity AL values, judge whether the AL values are more than predetermined threshold value, if it is judge the end product local environment for family
Outer strong light environment, then force to send the first pwm signal to the backlight drive circuit；
The output end of the backlight drive circuit is connected with the input of the LCD display, in the first PWM
Under the driving of signal the first LED current is exported to the LCD display；
LCD display brightness according to corresponding to being shown first LED current of input, to enter high-high brightness mould
Formula or high brightness pattern.
Further, when the main frame judges that AL values are less than or equal to the predetermined threshold value, then the end product is judged
In indoor conventional environment, then user instruction is waited, and control the LCD to show according to the user instruction selection received
The brightness of screen enters auto brightness pattern, and the second pwm signal is sent to the backlight drive circuit；
The backlight drive circuit exports the 2nd LED electricity under the driving of second pwm signal to the LCD display
Stream；
LCD display brightness according to corresponding to being shown second LED current of input, to show corresponding brightness
Or enter auto brightness pattern.
Further, out of doors strong light environment when, brightness value of the LCD display under the high-high brightness pattern is
600；Brightness value of the LCD display under the high brightness pattern is 400~600；
Indoors during conventional environment, LCD display brightness according to corresponding to being shown second LED current is less than
400。
Further, the predetermined threshold value is 5000lux.
The embodiment of the present invention also provides a kind of method visual under improvement end product sunlight, comprises the following steps：
Step S1, sent using the ambient light intensity AL values of the surrounding enviroment of ambient light sensor acquisition terminal product to master
Machine；
Step S2, by ambient light intensity AL value of the host analysis from the environmental sensor, judge that the AL values are
It is no to be more than predetermined threshold value, if it is judge that the end product local environment for outdoor strong light environment, is then forced to the back of the body
Light drive circuit sends the first pwm signal；
Step S3, the first LED current is exported to the LCD display under the driving of first pwm signal, control institute
LCD display brightness according to corresponding to being shown first LED current of input is stated, to enter high-high brightness pattern or high brightness
Pattern.
Further, when the main frame judges that AL values are less than or equal to the predetermined threshold value, then the end product is judged
In indoor conventional environment, then user instruction is waited, and control the LCD to show according to the user instruction selection received
The brightness of screen enters auto brightness pattern, sends the second pwm signal to the backlight drive circuit to drive it to the LCD
Display screen exports the second LED current, controls the LCD display bright according to corresponding to being shown second LED current of input
Degree, with brightness corresponding to display or enter auto brightness pattern.
Further, out of doors strong light environment when, brightness value of the LCD display under the high-high brightness pattern is
600；Brightness value of the LCD display under the high brightness pattern is 400~600；
Indoors during conventional environment, LCD display brightness according to corresponding to being shown second LED current is less than
400。
Further, the predetermined threshold value is 5000lux.
According to embodiments of the present invention improves system and method visual under end product sunlight, by above being carried in hardware
High brightness, by environment-identification place on software, screen intensity is automatically controlled, so as to avoid brightness and power wastage, is caused
User's visual fatigue, while avoid sunlight sub-screen brightness too low, assurance function, lift Consumer's Experience.The present invention is relatively reducing
On the premise of adding power consumption, sunlight interference is reduced, increase sunlight sub-screen is visual, avoids the outdoor strong light as caused by neglecting user
Under do not see Chu's screen display content, and indoor and dark situation sub-screen crosses the visual fatigue and power consumption penalty of bright band.
The present invention can lift visuality under end product sunlight, and can effectively avoid LCD caused by neglecting due to user
Brightness is too low, can not see screen content clearly or LCD brightness sets too high, the brightness waste brought and power consumption penalty, again will not shadow
Ring equipment endurance.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structure chart for improving system visual under end product sunlight according to the embodiment of the present invention；
Fig. 2 is the schematic diagram for the brilliance control mode that current end product is commonly used；
Fig. 3 is the schematic diagram of the brilliance control mode after the improvement according to the embodiment of the present invention；
Fig. 4 is the flow chart for improving method visual under end product sunlight according to the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The present invention proposes that a kind of make improves system and method visual under end product sunlight, can be in less increase work(
On the premise of consumption, sunlight interference is reduced, increase sunlight sub-screen is visual, so as to avoid the outdoor strong light as caused by neglecting user
Under do not see Chu's screen display content, and indoor and dark situation sub-screen crosses the visual fatigue and power consumption penalty of bright band.
As shown in figure 1, system visual under the improvement end product sunlight of the embodiment of the present invention, including：Main frame 1
(host), ambient light sensor 2 (light sensor), backlight drive circuit 3 (LED driver), LCD display screens 4, its
In, LCD display 4 is built-in with backlight LED41.
The present invention increases screen intensity on hardware, using LCD display 4, and by the 400nit of current conventional products
(nit is unit) is lifted, such as can lift 600nit.It should be noted that above-mentioned numerical value is only in order at example
Purpose, the present invention can be adjusted to above-mentioned numerical value as needed.
Specifically, the output end of ambient light sensor 2 is connected with the input of main frame 1, for by acquisition terminal product
Ambient light intensity AL (Ambient Light) value of surrounding enviroment is sent to main frame 1.
The output end of main frame 1 is connected with backlight drive circuit 3, for analyzing the ambient light intensity from environmental sensor
AL values, judge whether the AL values are more than predetermined threshold value (AL>Threshold value), if it is judge end product local environment to be outdoor strong
Luminous environment, then force to send the first pwm signal to backlight drive circuit 3.
Pwm signal is illustrated below：PWM is pulse-width signal, is generally stated with dutycycle, in theory from
0%~100% (actual product minimum will not be 0%, maximum will not be 100%.In being typically designed, high-high brightness generally corresponds to
100% dutycycle, most descend corresponding 0% dutycycle of brightness.In the present invention, high-high brightness 600,100% dutycycle correspond to bright
Degree 600, brightness corresponding to 66% dutycycle are 400.
In one embodiment of the invention, predetermined threshold value 5000lux.It should be noted that the selection of above-mentioned threshold value,
It can be adjusted according to actual effect.Such as 5000lux is roughly equivalent to partly cloudy outdoor environment luminous intensity, the threshold value can basis
Actual effect is further turned down or heightened.
The output end of backlight drive circuit 3 is connected with the input of LCD display 4, for the driving in the first pwm signal
It is lower to export the first LED current to LCD display 4.Backlight LED41 in LCD display 4 shows according to the first LED current of input
Show corresponding brightness, to enter high-high brightness pattern or high brightness pattern.
In one embodiment of the invention, brightness value of the LCD display 4 under high-high brightness pattern is 600；Out of doors
During strong light environment, brightness value of the LCD display 4 under high brightness pattern is 400~600.
High brightness pattern provided by the invention can bring high power consumption, but because time for actually using out of doors of user compared with
Few, the time that system enters high power consumption situation is shorter, and user enters high brightness mould indoors or under low-light level environment, without authority
Formula, so as to avoid user's carelessness and maloperation in logic, Overall Power Consumption is influenceed smaller.
Specifically, the present invention improves display brightness by increasing LED, but in order to avoid the high power consumption that high brightness is brought,
By setting ambient light intensity threshold value to distinguish place.By detecting ambient light intensity, it is AL values to define the ambient light intensity,
One threshold value is set, if AL ＞ threshold values, regards as being currently located in the open air of sunlight strong, main frame 1 is forced into most light
Degree or high brightness pattern, the scope for setting LCD brightness to be 600 or 400~600 is forced, to ensure visual effect, in the present context
Visuality, and logically avoid user misoperation and carelessness, sets that screen intensity is too low can not to see content clearly.This operation is
System is enforced, and user does not have limiting operation.
In addition, when main frame 1 judges that AL values are less than or equal to predetermined threshold value (AL≤threshold value), then judge that end product is in
Indoor conventional environment, then wait user instruction, and according to the brightness of the user instruction selection control LCD display 4 received or
Into auto brightness pattern, the second pwm signal is sent to backlight drive circuit 3；Backlight drive circuit 3 is in the second pwm signal
Under driving the second LED current is exported to LCD display 4；LCD display 4 is bright according to corresponding to being shown the second LED current of input
Degree, with brightness corresponding to display or enter auto brightness pattern.
In one embodiment of the invention, indoors conventional environment when, LCD display 4 is shown according to the second LED current
Corresponding brightness is less than 400.
Specifically, if detection AL values≤threshold value, system think to have returned to indoor conventional environment, it is not necessary to too highlighted
Degree.Open system authority, user can manually adjust brightness, or selection auto brightness pattern, and high-high brightness is in such a mode
400, brightness waste and power wastage are avoided, ensures equipment endurance.
As shown in figure 4, the embodiment of the present invention improves method visual under end product sunlight, comprise the following steps：
Step S1, sent using the ambient light intensity AL values of the surrounding enviroment of ambient light sensor acquisition terminal product to master
Machine；
Step S2, by ambient light intensity AL value of the host analysis from environmental sensor, it is pre- to judge whether the AL values are more than
If threshold value, end product local environment is if it is judged for outdoor strong light environment, then forces to send the to backlight drive circuit
One pwm signal.
In one embodiment of the invention, predetermined threshold value 5000lux.It should be noted that the selection of above-mentioned threshold value,
It can be adjusted according to actual effect.Such as 5000lux is roughly equivalent to partly cloudy outdoor environment luminous intensity, the threshold value can basis
Actual effect is further turned down or heightened.
Step S3, the first LED current is exported to LCD display under the driving of the first pwm signal, control LCD display
The brightness according to corresponding to being shown the first LED current of input, to enter high-high brightness pattern or high brightness pattern.
In one embodiment of the invention, out of doors strong light environment when, LCD display is bright under high-high brightness pattern
Angle value is 600；Brightness value of the LCD display under high brightness pattern is 400~600.
Specifically, the present invention improves display brightness by increasing LED, but in order to avoid the high power consumption that high brightness is brought,
By setting ambient light intensity threshold value to distinguish place.By detecting ambient light intensity, it is AL values to define the ambient light intensity,
One threshold value is set, if AL ＞ threshold values, regards as being currently located in the open air of sunlight strong, main frame 1 is forced into most light
Degree or high brightness pattern, the scope for setting LCD brightness to be 600 or 400~600 is forced, to ensure visual effect, in the present context
Visuality, and logically avoid user misoperation and carelessness, sets that screen intensity is too low can not to see content clearly.This operation is
System is enforced, and user does not have limiting operation.
In addition, when main frame judges that AL values are less than or equal to predetermined threshold value, then judge that end product is in indoor conventional ring
Border, then wait user instruction, and according to the brightness of the user instruction selection control LCD display received or into auto brightness
Pattern, the second pwm signal is sent to drive it to export the second LED current to LCD display to backlight drive circuit, controls LCD
Display screen brightness according to corresponding to being shown the second LED current of input, with brightness corresponding to display or enter auto brightness pattern.
In one embodiment of the invention, indoors conventional environment when, LCD display is shown according to the second LED current
Corresponding brightness is less than 400.
If specifically, detection AL values≤threshold value, then it is assumed that have returned to indoor conventional environment, it is not necessary to too high brightness.
Open system authority, user can manually adjust brightness, or selection auto brightness pattern, and high-high brightness is 400 in such a mode,
Brightness waste and power wastage are avoided, ensures equipment endurance.
According to embodiments of the present invention improves system and method visual under end product sunlight, by above being carried in hardware
High brightness, by environment-identification place on software, screen intensity is automatically controlled, so as to avoid brightness and power wastage, is caused
User's visual fatigue, while avoid sunlight sub-screen brightness too low, assurance function, lift Consumer's Experience.The present invention is relatively reducing
On the premise of adding power consumption, sunlight interference is reduced, increase sunlight sub-screen is visual, avoids the outdoor strong light as caused by neglecting user
Under do not see Chu's screen display content, and indoor and dark situation sub-screen crosses the visual fatigue and power consumption penalty of bright band.
The present invention can lift visuality under end product sunlight, and can effectively avoid LCD caused by neglecting due to user
Brightness is too low, can not see screen content clearly or LCD brightness sets too high, the brightness waste brought and power consumption penalty, again will not shadow
Ring equipment endurance.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.The scope of the present invention
By appended claims and its equivalent limit.
Claims (8)
1. a kind of improve system visual under end product sunlight, it is characterised in that including：Main frame, ambient light sensor, the back of the body
Light drive circuit, LCD display, wherein, the LCD display is built-in with backlight LED,
The output end of the ambient light sensor is connected with the input of the main frame, for by the peripheral ring of acquisition terminal product
The ambient light intensity AL values in border are sent to the main frame；
The output end of the main frame is connected with the backlight drive circuit, for analyzing the ambient light from the environmental sensor
Intensity A L values, judge whether the AL values are more than predetermined threshold value, if it is judge the end product local environment to be outdoor strong
Luminous environment, then force to send the first pwm signal to the backlight drive circuit；
The output end of the backlight drive circuit is connected with the input of the LCD display, in first pwm signal
Driving under to the LCD display export the first LED current；
LCD display brightness according to corresponding to being shown first LED current of input, with enter high-high brightness pattern or
High brightness pattern.
2. system visual under end product is improved as claimed in claim 1, it is characterised in that when the main frame judges AL
When value is less than or equal to the predetermined threshold value, then judges that the end product is in indoor conventional environment, then wait user instruction,
And the brightness of the LCD display is controlled according to the user instruction selection received or enters auto brightness pattern, to institute
State backlight drive circuit and send the second pwm signal；
The backlight drive circuit exports the second LED current under the driving of second pwm signal to the LCD display；
LCD display brightness according to corresponding to being shown second LED current of input, with brightness corresponding to display or enters
Enter auto brightness pattern.
3. system visual under end product is improved as claimed in claim 2, it is characterised in that strong light environment out of doors
When, brightness value of the LCD display under the high-high brightness pattern is 600；The LCD display is in the high brightness mould
Brightness value under formula is 400~600；
Indoors during conventional environment, LCD display brightness according to corresponding to being shown second LED current is less than 400.
4. visual system under end product is improved as claimed in claim 1, it is characterised in that the predetermined threshold value is
5000lux。
5. a kind of improve method visual under end product sunlight, it is characterised in that comprises the following steps：
Step S1, sent using the ambient light intensity AL values of the surrounding enviroment of ambient light sensor acquisition terminal product to main frame；
Step S2, by ambient light intensity AL value of the host analysis from the environmental sensor, judge whether the AL values are big
In predetermined threshold value, the end product local environment is if it is judged for outdoor strong light environment, then forces to drive to the backlight
Dynamic circuit sends the first pwm signal；
Step S3, the first LED current is exported to the LCD display under the driving of first pwm signal, described in control
LCD display brightness according to corresponding to being shown first LED current of input, to enter high-high brightness pattern or high brightness mould
Formula.
6. method visual under end product sunlight is improved as claimed in claim 5, it is characterised in that when the main frame is sentenced
When disconnected AL values are less than or equal to the predetermined threshold value, then judge that the end product is in indoor conventional environment, then wait user
Instruction, and the brightness of the LCD display is controlled according to the user instruction selection received or enters auto brightness pattern,
The second pwm signal is sent to the backlight drive circuit to drive it to export the second LED current, control to the LCD display
LCD display brightness according to corresponding to being shown second LED current of input, with brightness corresponding to display or enter certainly
Dynamic luminance patterns.
7. method visual under end product sunlight is improved as claimed in claim 6, it is characterised in that the strong ring of light out of doors
During border, brightness value of the LCD display under the high-high brightness pattern is 600；The LCD display is in the high brightness
Brightness value under pattern is 400~600；
Indoors during conventional environment, LCD display brightness according to corresponding to being shown second LED current is less than 400.
8. method visual under end product sunlight is improved as claimed in claim 5, it is characterised in that the predetermined threshold value
For 5000lux.
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| CN201710851726.XA CN107689216A (en) | 2017-09-19 | 2017-09-19 | It is a kind of to improve system and method visual under end product sunlight |
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| CN201710851726.XA CN107689216A (en) | 2017-09-19 | 2017-09-19 | It is a kind of to improve system and method visual under end product sunlight |
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| CN109167946A (en) * | 2018-09-30 | 2019-01-08 | Oppo广东移动通信有限公司 | Method for processing video frequency, device, electronic equipment and storage medium |
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Application publication date: 20180213 |